Foxboro P0914SA BDSO26 Analog I/O Module

Product Description

The Foxboro P0914SA BDSO26 is a precision analog input/output module engineered for the Foxboro I/A Series DCS platform. It handles both signal acquisition and output control within a single module, supporting standard industrial signal ranges including 4–20 mA and ±10 VDC.

Built with 16-bit conversion technology, the module ensures accurate signal processing for critical control loops. Its architecture incorporates full electrical isolation and supports redundant power inputs, enabling stable operation in electrically noisy or high-risk environments.

This module is commonly deployed in applications requiring consistent analog performance and seamless integration with distributed control architectures, including power plants, refining processes, and continuous manufacturing systems.

Key Characteristics

• Combined analog input and output functionality within one module

• Compatible with 4–20 mA current loops and ±10 VDC voltage signals

• 16-bit resolution for both A/D and D/A conversion

• Measurement accuracy up to ±0.1% of full scale

• Isolation between channels and between field and system backplane

• Redundant 24 VDC supply support for improved availability

• Channel update performance up to 250 ms per channel

• Supports hot replacement without system shutdown

• Mounting flexibility: baseplate or DIN rail

• Compliance with CE and RoHS standards

Technical Specifications

Signal & Performance

• Signal Types: 4–20 mA, ±10 VDC

• Resolution: 16-bit (input and output)

• Accuracy: ±0.1% full scale

• Channel Count: Typically 8 or 16 channels depending on configuration

• Update Time: ≤ 250 ms per channel

Isolation

• Channel-to-channel isolation

• Field-to-system isolation

• Designed to minimize ground loop effects and electrical interference

Power Supply

• Nominal Voltage: 24 VDC

• Redundancy: Supported

• Consumption: ≤ 8.5 W

Environmental Conditions

• Operating Temperature: 0°C to +60°C

• Humidity: Up to 95% RH non-condensing

• Protection: Industrial-grade design for high-noise environments

Mechanical Details

• Mounting Options: Baseplate or DIN rail

• Dimensions: 100 × 50 × 20 mm

• Weight: 0.6 kg

Engineering Considerations

The module’s isolation design significantly reduces the risk of signal distortion caused by electrical noise or grounding issues. Its 16-bit resolution improves loop stability, particularly in PID-controlled processes where small signal variations directly impact output accuracy.

Redundant power capability ensures continuity in systems where downtime is not acceptable, while the hot-swappable design simplifies maintenance procedures and reduces service interruptions.

Typical Applications

• Continuous process industries such as petrochemical and refining

• Power generation and turbine control systems

• Water and wastewater treatment facilities

• Pharmaceutical and batch processing systems

• Industrial production lines requiring precise analog control

FAQ

Q: Does this module support both input and output signals simultaneously?
A: Yes, it is designed as a combined analog I/O module capable of handling both functions within the same unit.

Q: What level of accuracy can be expected?
A: The module provides ±0.1% full-scale accuracy, suitable for high-precision control loops.

Q: Is electrical isolation included?
A: Yes, it features both channel-to-channel and field-to-system isolation for protection and signal integrity.

Q: Can the module be replaced without shutting down the system?
A: Yes, it supports hot-swapping when used in compatible system configurations.